RH furnace dust removal device

Abstract

A RH furnace dust removal device, including dust removal pipeline and dust collector, dust removal pipeline is used for guiding waste gas in vacuum pipeline to dust collector, communication pipeline is arranged between vacuum pipeline and dust removal pipeline, first switch valve, second switch valve and electric regulating valve arranged between first switch valve and second switch valve are sequentially arranged on each communication pipeline in the direction of vacuum pipeline to dust removal pipeline, wherein: first switch valve and second switch valve are used for controlling the closure or opening of vacuum pipeline, second switch valve is connected with sensor group, electric regulating valve is connected with control computer electric signal, control computer is connected with sensor group through electric signal, so that the waste gas signal sensed by sensor group is converted into data signal by control computer to control the flow of electric regulating valve, the above-mentioned device solves the problems of incomplete dust removal, high equipment energy consumption and unstable operation during traditional RH furnace cleaning vacuum tank, and greatly improves the production efficiency of refining workshop.

Description

Technical Field

[0001] This utility model relates to the technical field of steel refining equipment, specifically to a dust removal device for an RH furnace. Background Technology

[0002] During the operation of the refining RH furnace, the vacuum tank needs to be cleaned regularly. During cleaning, a large amount of dust-laden exhaust gas is generated. This dust-laden gas has a complex composition, including metal oxide particles, soot, etc. If it is discharged directly without effective treatment, it will cause serious pollution to the environment and does not meet the requirements of strict environmental protection regulations.

[0003] Meanwhile, the presence of dust can also affect the normal production and operation of the RH furnace. Excessive dust deposition in the vacuum tank and related pipelines may lead to pipeline blockage, accelerated equipment wear, and reduced equipment lifespan and operating efficiency.

[0004] Traditional dust collectors are difficult to implement, have inconvenient airflow control, and poor dust removal effect, which greatly increases the cost of dust removal. Under these conditions, a dust removal device suitable for cleaning the vacuum tank of the refining RH furnace is needed.

[0005] To address the aforementioned issues, a dust removal device for RH furnaces is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a dust removal device for an RH furnace to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dust removal device for an RH furnace, used to clean the vacuum pipes of an RH furnace, the dust removal device comprising:

[0008] The dust removal duct and the dust collector are provided, wherein the dust removal duct is used to guide the exhaust gas in the vacuum duct to the dust collector; a connecting duct is provided between the vacuum duct and the dust removal duct.

[0009] Each of the connecting pipes is provided with a first switching valve, a second switching valve, and an electrically adjustable valve arranged sequentially along the direction from the vacuum pipe to the dust removal pipe. The first and second switching valves are used to control the opening or closing of the vacuum pipe. The second switching valve is connected to a sensor group, which is used to sense the flue gas flowing in the dust removal pipe. The electrically adjustable valve is electrically connected to a control computer, and the control computer is electrically connected to the sensor group so that the exhaust gas signal sensed by the sensor group is converted into a data signal by the control computer to control the flow rate of the electrically adjustable valve.

[0010] Furthermore, the first switching valve is configured as a manual valve, used to cut off or open the flow path within the vacuum pipeline.

[0011] Furthermore, the second switching valve is configured as an electric spectacle valve, which is connected to the control computer via an electrical circuit and is used to control the airflow in the vacuum pipe via electrical signals.

[0012] Furthermore, the sensor group includes a smoke sensor and a pressure sensor, wherein the smoke sensor is used to provide a smoke signal to the control computer; and the pressure sensor is used to provide a pressure signal to the control computer.

[0013] Furthermore, both the first switching valve and the electric regulating valve are equipped with emergency stop switches, which enable the equipment to be shut down in case of abnormal conditions.

[0014] Furthermore, the dust collector is configured as a bag filter dust collector.

[0015] Furthermore, the electric spectacle valve is equipped with an electric drive device, which is connected to the electrical circuit and is used to control the opening and closing of the electric spectacle valve after receiving a signal from the control computer.

[0016] Furthermore, the connecting pipe is connected to the vacuum pipe and the dust removal pipe respectively through a joint structure.

[0017] Analysis shows that this utility model provides a dust removal device for an RH furnace, used to clean the vacuum pipes of an RH furnace. The dust removal device includes a dust removal pipe and a dust collector. The dust removal pipe guides the exhaust gas in the vacuum pipe to the dust collector. A connecting pipe is provided between the vacuum pipe and the dust removal pipe. By adding a connecting pipe between the dust removal pipe and the vacuum pipe, installation positions are provided for the subsequent addition of a first switching valve, a second switching valve, and an electric regulating valve, thereby controlling the exhaust gas flow rate. Each connecting pipe is equipped with a first switching valve, a second switching valve, and an electric regulating valve arranged sequentially along the direction from the vacuum pipe to the dust removal pipe, wherein: the first switching valve and the second switching valve are used to control the closing or opening of the vacuum pipe; when maintenance or inspection is needed and an abnormality is found in a certain part, Closing the first switch valve isolates the vacuum chamber from other parts, ensuring personnel safety. The second switch valve is connected to a sensor group that senses the flue gas flowing through the dust removal duct. During vacuuming, it effectively cuts off the airflow, completely closing the valve to prevent gas passage and isolate the vacuum duct from the dust removal device, ensuring effective vacuuming. The electric regulating valve is electrically connected to a control computer, which in turn is electrically connected to the sensor group. This allows the control computer to convert the flue gas signals sensed by the sensors into data signals to control the flow rate of the electric regulating valve. The electric regulating valve precisely adjusts the gas flow rate during dust removal, regulating the operating power and ventilation volume of the dust removal equipment based on parameters such as pressure changes and dust concentration within the vacuum duct. This ensures that the dust-laden gas enters the dust removal device at an appropriate speed, guaranteeing a good dust removal effect.

[0018] Compared with the closest existing technology, the technical solution provided by this utility model has the following advantages:

[0019] During the current operation of the refining RH furnace, the vacuum tank requires regular cleaning, generating a large amount of dust-laden exhaust gas. Using traditional dust collectors is difficult to implement, airflow control is inconvenient, and the dust removal effect is poor, greatly increasing the cost of dust removal. This utility model solves this problem by setting a connecting pipe between the dust removal pipe and the vacuum pipe, and by sequentially arranging a first switching valve, a second switching valve, and an electric regulating valve between the first and second switching valves on the connecting pipe along the direction from the vacuum pipe to the dust removal pipe. This device fits tightly against the vacuum pipe, maximizing the capture of smoke and dust escaping from the cleaning vacuum tank, and connecting to the dust collector to filter fine dust, ensuring that the dust removal efficiency is always at its best. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the RH furnace dust removal device according to an example of this utility model.

[0021] In the diagram: 1. Dust removal pipe; 2. Vacuum pipe; 3. Connecting pipe; 4. Manual valve; 5. Electric regulating valve; 6. Electric spectacle valve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0026] like Figure 1 As shown, this utility model provides a technical solution: a dust removal device for an RH furnace, used to clean the vacuum pipes of an RH furnace, the dust removal device comprising:

[0027] The dust removal duct 1 and the dust collector are provided. The dust removal duct 1 is used to guide the exhaust gas in the vacuum duct 2 to the dust collector. A connecting duct 3 is provided between the vacuum duct 2 and the dust removal duct. The connecting duct 3 provides a channel for transporting the exhaust gas in the vacuum duct 2 to the dust removal duct 1, and provides an intermediate medium for the subsequent installation of a device for controlling the flow of exhaust gas.

[0028] Each of the connecting pipes 1 is provided with a first switching valve, a second switching valve, and an electric regulating valve 5 arranged sequentially along the direction from the vacuum pipe 2 to the dust removal pipe 1. The first switching valve and the second switching valve are used to control the opening or closing of the vacuum pipe. When the first switching valve is needed for maintenance or inspection and a certain part is found to be abnormal, closing the valve can isolate the vacuum pipe from other parts of the dust removal device and ensure the safety of the personnel.

[0029] The second switching valve is connected to a sensor group, which is used to sense the flue gas flowing in the dust removal duct. The second switching valve can be controlled by a computer. During the vacuuming process, the second switching valve can effectively cut off the airflow and can completely close the valve to prevent gas from passing through, thus isolating the vacuum duct and the dust removal device and ensuring the vacuuming effect.

[0030] The electric regulating valve 5 is electrically connected to the control computer, and the control computer is electrically connected to the sensor group, so that the exhaust gas signal sensed by the sensor group is converted into a data signal by the control computer to control the flow of the electric regulating valve 5; the electric regulating valve 5 is provided in the middle to precisely regulate the flow of gas during the dust removal process. According to the pressure change in the vacuum pipeline, dust concentration and other parameters, the operating power and ventilation volume of the dust removal equipment are adjusted so that the dust-laden gas enters the dust removal device at an appropriate speed to ensure good dust removal effect.

[0031] Preferably, the first switching valve is configured as a manual valve 4, used to cut off or open the flow path in the vacuum pipeline.

[0032] The first switching valve is used to isolate the vacuum pipeline from other parts of the dust removal device. Therefore, the first switching valve does not need to have too many functions. The manual valve 4 has a simple structure and does not contain any electronic or pneumatic components such as actuators, controllers, and sensors. Due to its simple structure and few parts, its failure rate is relatively low and its cost-effectiveness is extremely high. Once the manual valve is closed, it will always remain in this state (unless manually operated or mechanically malfunctioning) and will not be accidentally activated due to power outages, signal interference, etc., providing a deterministic isolation guarantee and ensuring the safety of the staff.

[0033] Preferably, the second switching valve is configured as an electric spectacle valve 6, which is connected to the control computer via an electrical circuit and is used to control the airflow in the vacuum pipe via an electrical signal.

[0034] An electric spectacle valve 5 is used to achieve absolute isolation between the vacuum pipeline 2 and the other dust removal devices. When the valve is closed, both sides of the pipeline are completely isolated, achieving zero leakage and ensuring the vacuuming effect.

[0035] Preferably, the sensor group includes a smoke sensor and a pressure sensor, wherein the smoke sensor provides a smoke signal to the control computer, and the pressure sensor provides a pressure signal to the control computer.

[0036] By employing smoke and pressure sensors, we can prevent any sensor from receiving interference and causing false alarms, which could lead to incorrect electrical signals being sent to the control computer and thus causing errors in the opening degree of the electric regulating valve 5, thereby affecting the dust removal effect.

[0037] Preferably, both the first switching valve and the electric regulating valve 5 are equipped with emergency stop switches, which are used to shut down the equipment in case of abnormality to ensure the safety of the staff.

[0038] Preferably, the dust collector is a bag filter, which filters fine dust through a fine cloth bag to ensure that the dust removal efficiency is always at its best.

[0039] Preferably, the electric spectacle valve 6 is provided with an electric drive device, which is connected to the electrical circuit and is used to control the opening and closing of the electric spectacle valve 6 after receiving the control computer signal, so as to ensure that the electric spectacle valve 6 can respond quickly after receiving the control computer signal, completely close the valve, prevent gas from passing through, and ensure the vacuuming effect.

[0040] Preferably, the connecting pipe 3 is connected to the vacuum pipe 2 and the dust removal pipe 1 respectively through a joint structure.

[0041] A connector structure is used to connect the connecting pipe 3, vacuum pipe 2 and dust removal pipe 1, which makes it easy to disassemble and replace any of the pipes if any of them is damaged, and also facilitates pipe rearrangement, improving the adaptability of the device.

[0042] The specific process of using this device to remove dust from the vacuum tank pipeline is as follows:

[0043] During the preparation phase, manual valve 4 is closed, and other dust removal devices are inspected. During the operation phase, after the inspection is completed, manual valve 4, electric regulating valve 5, and electric spectacle valve 6 are opened. The sensor transmits the flue gas concentration and pressure change signals to the control computer, which controls the opening degree of electric regulating valve 5. The exhaust gas is conducted through connecting pipe 3 to dust removal pipe 1, and then to the bag filter, where fine dust is filtered through the fine filter bags. After dust removal is completed, the computer controls electric spectacle valve 6 to completely close it, cutting off the airflow and ensuring the vacuum effect.

[0044] In summary, this utility model achieves the following technical effects:

[0045] 1) This utility model provides a path for the conduction of exhaust gas in vacuum pipe 2 and a medium for controlling the flow rate of exhaust gas by adding a connecting pipe 3 between vacuum pipe 2 and dust removal pipe 1, thereby avoiding direct modification of vacuum pipe 2 and dust removal pipe 1 and affecting the dust removal effect.

[0046] 2) This utility model uses a first switch valve, which is a manual valve 4. When it is necessary to repair or inspect a certain part and an abnormality occurs, closing the valve can isolate the vacuum tank and other parts of the dust removal device, ensuring the safety of the staff.

[0047] 3) This utility model uses an electric regulating valve 5 and a sensor group to precisely regulate the flow rate of gas during the dust removal process. It adjusts the operating power and ventilation of the dust removal equipment according to parameters such as pressure changes and dust concentration in the vacuum pipeline, so that the dust-laden gas enters the dust removal device at a suitable speed, ensuring a good dust removal effect.

[0048] 4) This utility model is equipped with a second switching valve, which is an electric spectacle valve that can be controlled by a control computer. During the vacuuming process, it can effectively cut off the airflow, completely close the valve, prevent gas from passing through, and isolate the vacuum pipeline and the rest of the dust removal device to ensure the vacuuming effect.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for an RH furnace, used for cleaning the vacuum pipes of an RH furnace, characterized in that, The dust removal device includes: A dust removal duct and a dust collector, wherein the dust removal duct is used to guide the exhaust gas in the vacuum duct to the dust collector; a connecting duct is provided between the vacuum duct and the dust removal duct; Each of the connecting pipes is provided with a first switching valve, a second switching valve, and an electrically adjustable valve arranged sequentially along the direction from the vacuum pipe to the dust removal pipe. The first and second switching valves are used to control the opening or closing of the vacuum pipe. The second switching valve is connected to a sensor group, which is used to sense the flue gas flowing in the dust removal pipe. The electrically adjustable valve is electrically connected to a control computer, and the control computer is electrically connected to the sensor group so that the exhaust gas signal sensed by the sensor group is converted into a data signal by the control computer to control the flow rate of the electrically adjustable valve.

2. The RH furnace dust removal device according to claim 1, characterized in that, The first switching valve is configured as a manual valve, used to cut off or open the flow path in the vacuum pipeline.

3. The RH furnace dust removal device according to claim 1, characterized in that, The second switching valve is configured as an electric spectacle valve, which is connected to the control computer via an electrical circuit and is used to control the airflow in the vacuum pipe via electrical signals.

4. The RH furnace dust removal device according to claim 1, characterized in that, The sensor group includes a smoke sensor and a pressure sensor. The smoke sensor is used to provide a smoke signal to the control computer, and the pressure sensor is used to provide a pressure signal to the control computer.

5. The RH furnace dust removal device according to claim 1, characterized in that, Both the first switching valve and the electric regulating valve are equipped with emergency stop switches, which are used to shut down the equipment in case of abnormal conditions.

6. The RH furnace dust removal device according to claim 1, characterized in that, The dust collector is a bag filter.

7. The RH furnace dust removal device according to claim 3, characterized in that, The electric spectacle valve is equipped with an electric drive device, which is connected to the electrical circuit and is used to control the opening and closing of the electric spectacle valve after receiving signals from the control computer.

8. The RH furnace dust removal device according to claim 1, characterized in that, The connecting pipe is connected to the vacuum pipe and the dust removal pipe respectively through joint structures.

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